Chemical Energy


Nucor Hertford Tundish and Ladle Preheater Skid


Nucor Hertford has purchased two (2) Ladle Pre-heater Skids and two (2) Tundish pre-heater skids from INTECO PTI. These skids replace the existing gas and air control system for the ladle and tundish preheaters while reusing the existing refractory lids and structural frames. The package includes the gas control train, the air blower, the burner, the PLC panel and the operator control panel. The operator control panel is a touch screen that includes integrated maintenance information. INTECO PTI's ladle and tundish pre-heater control skids increase the efficiency of the preheating process while reducing the maintenance cost.


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McConway and Torley Oxygen, Aluminum wire and Testing Cart for EAF

McConway and Torley, a steel mill located in Pittsburg, Pennsylvania, has purchased a cart from INTECO PTI that will deliver oxygen, aluminum wire to the liquid steel bath and allow temperature and product sampling of the liquid steel.  The cart will operate on rails and will use electric motors to move the cart in front of and away from the Electric Arc Furnace.  The cart has three lances that can be individually inserted into and retract from the EAF.   The first lance holds a consumable pipe that will be used to inject oxygen into the liquid steel in the EAF.  The insert depth of the pipe is controlled by the operator and the pipe can be set to automatically advance as the pipe is worn away by the liquid steel bath.  The flow of oxygen is automatically controlled and the lance automatically retracts after the prescribed amount of oxygen is injected into the EAF process.    The second lance holds a special tube that allows aluminum wire to be injected into the liquid steel bath with an argon gas shroud.  The special tube is consumable and will be replaced each heat.  The cart will hold the aluminum wire cage and wire feeder.  The amount of wire and the speed of wire injection into the process is controlled remotely by the operator.  The third lance is a standard temperature and product sampler.  Standard temperature probes and steel sample probes are fitted to the lance.  The lance inserts into the EAF and takes a temperature or a sample of the liquid steel.  The standard probes are consumable and replace after each use.  The entire cart is controlled remotely from the operator pulpit.  The cart removes the operator from in front of the extremely high radiant heat and molten slag and steel from the EAF.  The cart also eliminates the need for the operator to manually shovel hundreds of pounds of aluminum into the EAF.  The installation of this unique equipment will improve the efficiency of the EAF while greatly improving operator safety.

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Nucor Hertford Tundish Skids

Nucor Steel Hertford, located in North Carolina; USA, has placed on order with INTECO PTI for two (2) Tundish Skids.  The new control skids include combustion air and natural gas controls lines and include a new burner.  In addition, Infrared Temperature sensors will be mounted into the tundish refractory lid to directly measure the refractory temperature in the bottom of the ladle.  This additional process data will allow better control of the tundish refractory pre-heat. 

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Gerdau Jacksonville Ladle Carbon Injection System

Gerdau Jacksonville has purchased a material injection system from INTECO PTI to add carbon to the ladle after tap.  The system stores carbon in an 870 cuft hopper, which is filled by super sack.  Also included in the system is a 100 cuft vessel that holds 4000 lbs of carbon, along with the transport piping from the vessel to the ladle stirring area.  A touch screen HMI positions a manipulator arm and selects the amount of material injected into the ladle, where the maximum amout of carbon that can be delivered is 200 lb/min.  The manipulator arm then positions the transport pipe over the ladle stirring eye. The material injection system has many benefits, including the protection of operators by eliminating the handling of 50 lb bags.  The new system will also increase the accuracy of the material added to the ladle, which will result in final carbon levels in the steel that are closer to the target specification.

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Gerdau Midlothian Ladle Dryer / Preheater

Gerdau Midlothian, located in Midlothian, Texas, USA, has purchased a custom designed ladle dryer from INTECO PTI to fit the existing ladle repair building.  The ladle dryer is designed to allow the ladle carrier to deliver a ladle directly under the preheater, where the ladle lid is lowered onto the ladle for drying.  The air/fuel burner control system is designed to follow the drying profile recommended by the refractory supplier. The system's user friendly HMI based control system is easy to use, and provides clear and useful information on the status of the preheat or dry-out cycle.  Most importantly, the dryer delivers a fully dried ladle to the melt shop using the least amount of fuel.

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